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v3.22.1

Leases (Details) | 3 Months Ended
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Mar. 31, 2022
Leases [Abstract] |
Lease expiration period, description | Our leases have original lease periods expiring between 2021 and 2025.

X
- Definition Description of lease expiration period. + References No definition available. + Details
Name: | crex_LeaseExpirationPeriodDescription
Namespace Prefix: | crex_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration